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点源二维势场问题的边界元法中点源处理方法

A Sectioned Wave Number Selection Technique in the Treatment of Potential Field Data due to a Point Current Source over 2-D Environment Using Boundary Element Method
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摘要 用傅氏变换将点源二维地电断面的三维边值问题,变换成二维问题.提出了波数选取的方法与确定傅氏反变换加权系数的解析方法.研究了提高计算精度和计算速度的方法技术.方法简单,精度较高. A three-dimensional (3-D) boundary value problem for the electric field of a point current source over a two-dimensional (2-D) geoelectric section is easy to be converted by uisng Fourier transform into a 2-D one. A technique for sectioned wave number selection and an analytical method for the determination of weighting coefficients of inverse Fourier transform are proposed. Techniques for raising the computational accuracy and speed are also discussed in this paper. In comparison with other methods previously developed, the method we presented is more simple and has a higher accuracy.
出处 《地质与勘探》 CAS CSCD 北大核心 1989年第10期37-42,共6页 Geology and Exploration
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